spritzer

It's the only reason that I'm a contributor on HF although having a search function that works can be nice as well. Desoldering a resistor isn't that hard but don't do it you don't feel comfortable. If Deepak doesn't want the amp then I'll take it off your hands.

All has been quiet on the western front but I'm just waiting for the onslaught. It will come... it always has when Stax fever hits the boards. I'll probably be selling some more of my gear soon and I'm really not looking forward to that. \

The boards inside the SRD-7 are tiny or roughly 5"x2.5" but I can't be sure since I don't have any here. The PCB could be taller but not by much. Now if we were talking about a new design it's certainly doable wit some cheap transformers.

It's a basic PSU feeding a DC-DC high voltage converter. But like Marc said it's a trade secret... It all fits on one of the perf boards you sent me with room to spare. It could certainly be squeezed into an energizer of some sorts with some creative thinking. I'm also going to build a combination supply around the small 230v/115v transformer with a doubler for the normal bias and 5 levels for the Pro.

I finished the variable bias supply destined for the BH earlier today and I was given the task to try out the Koss ESP950 at 620v bias. Holy crap is the first impression when listening to Megadeth out of a SRM-T1. The bass is much more controlled and so very deep that it gives the 4070 a run for it's money. The sound seemed a little bit forward as first but after some time I don't notice it any more. Now the bias supply should be able to reach 880v so should I see just how much bass they can produce.

Excuses, excuses...

It could very well have been replaced at some point and with the wrong part. I think it's time to go resistor shopping.

It does look very, very good!! Impressions please...

Looks great. I make all my cables like this now and the flexibility is great. How people can live with the VD stuff is lost on me...

The flash was probably from the fuse but the smoke is harder to pin down. Since you basically short circuited the transformer it could come from a number of components. If it works it works so no worries and listen to some tunes...

The Stax ribbon cable is the following for the 3 wires entering each housing: Wire with stripe or dotted line is the +, the middle wire is the bias and the last wire is the -. If you look carefully at the plastic housing of the Gamma drivers you can see the markings for + and -.

The caps are the problem as 550v parts are rare and 600v+ electrolytic's are all but unheard of in the sizes needed. There is always the option of having them custom made but the cost...

I had heard that there was something cooking. Sign me up for a PCB or two but we need at least +/-450v...

I don't have any but who wants to settle for that supply when the BH deserves so much better. For comparison I'm going with a Sigma22 as the +/-15v psu so overkill is the name of the day...

Want some BH PCB's...??

Damn right!!!

Blah Nordost is just some silver plater copper crap in teflon. If you want really great tea I recommend the Acrolink 7n PC-OCC cables.

It does say OTL in the text but they could be using a push-pull choke to act as a primary on an output transformer similar to what Jones did in his 845 DD ESL amp. I quite like the output transformer box you can use with the amp...

Nothing really. Bog standard kettle cable.

It's for its own good.

The old mini-disc players were much better then the Apple junk and some even very good. Mini-disc was so very cool in 1995... 100gb disc and Rockbox. I might go to town on the output and fit a high pass filter off the dac or dsp chips bypassing all the active crap.

Ghetto and dangerous... I like it!! Molex pins (PSU connectors in computers) work great as ghetto Stax pins and sockets so they can be used with plenty of electrical tape.

It's good to hear that it's working. We did know that the current requirements would kill anything but the BH but it does work. So does anybody at Canjam have a 4 pin XLR socket, a Stax male plug and some 1000v teflon wire?

Thanks for that. There appear to have been 3 different drivers, color coded. My ECR-400 had red drivers but what's in the ECR-500?

So there is foam damping in your set? The ECR400 I had (in parts now due to channel imbalance) had mineral wool as damping though it wasn't as thick as the stuff Stax used. The SR-5 pads are nearly identical but I suppose SR-007 pads would fit as well... You polygamist you... The amount of damping has a huge impact on the SPL level as you are wasting away energy to tame tame the drivers. I'm getting a modified Toshiba Gigabeat soon that shouldn't have any problem driving the phones That's what I did. Call up the US distributor and ask about a replacement 202 cable. You can also buy a whole lot of Koss extension cables but they are a bitch to work with. Woodies would be nice as the drivers are quite good. If I find a better headphone then the UR18 I might just mod that as well for kicks. I can always buy more drivers...